131 lines
3.8 KiB
C
131 lines
3.8 KiB
C
/*-
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* Copyright (c) 2019, Mellanox Technologies, Ltd. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS `AS IS' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#include <linux/types.h>
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#include <linux/etherdevice.h>
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#include <dev/mlx5/mlx5_ifc.h>
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#include <dev/mlx5/device.h>
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#include <dev/mlx5/mpfs.h>
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#include <dev/mlx5/driver.h>
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#include "mlx5_core.h"
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#define MPFS_LOCK(dev) spin_lock(&(dev)->mpfs.spinlock)
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#define MPFS_UNLOCK(dev) spin_unlock(&(dev)->mpfs.spinlock)
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int
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mlx5_mpfs_add_mac(struct mlx5_core_dev *dev, u32 *p_index, const u8 *mac,
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u8 vlan_valid, u16 vlan)
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{
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const u32 l2table_size = MIN(1U << MLX5_CAP_GEN(dev, log_max_l2_table),
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MLX5_MPFS_TABLE_MAX);
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u32 in[MLX5_ST_SZ_DW(set_l2_table_entry_in)] = {};
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u32 out[MLX5_ST_SZ_DW(set_l2_table_entry_out)] = {};
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u8 *in_mac_addr;
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u32 index;
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int err;
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if (!MLX5_CAP_GEN(dev, eswitch_flow_table)) {
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*p_index = 0;
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return (0);
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}
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MPFS_LOCK(dev);
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index = find_first_zero_bit(dev->mpfs.bitmap, l2table_size);
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if (index < l2table_size)
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set_bit(index, dev->mpfs.bitmap);
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MPFS_UNLOCK(dev);
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if (index >= l2table_size)
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return (-ENOMEM);
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MLX5_SET(set_l2_table_entry_in, in, opcode, MLX5_CMD_OP_SET_L2_TABLE_ENTRY);
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MLX5_SET(set_l2_table_entry_in, in, table_index, index);
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MLX5_SET(set_l2_table_entry_in, in, vlan_valid, vlan_valid);
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MLX5_SET(set_l2_table_entry_in, in, vlan, vlan);
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in_mac_addr = MLX5_ADDR_OF(set_l2_table_entry_in, in, mac_address);
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ether_addr_copy(&in_mac_addr[2], mac);
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err = mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
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if (err != 0) {
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MPFS_LOCK(dev);
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clear_bit(index, dev->mpfs.bitmap);
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MPFS_UNLOCK(dev);
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} else {
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*p_index = index;
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}
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return (err);
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}
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int
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mlx5_mpfs_del_mac(struct mlx5_core_dev *dev, u32 index)
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{
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u32 in[MLX5_ST_SZ_DW(delete_l2_table_entry_in)] = {};
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u32 out[MLX5_ST_SZ_DW(delete_l2_table_entry_out)] = {};
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int err;
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if (!MLX5_CAP_GEN(dev, eswitch_flow_table)) {
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if (index != 0)
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return (-EINVAL);
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return (0);
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}
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MLX5_SET(delete_l2_table_entry_in, in, opcode, MLX5_CMD_OP_DELETE_L2_TABLE_ENTRY);
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MLX5_SET(delete_l2_table_entry_in, in, table_index, index);
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err = mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
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if (err == 0) {
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MPFS_LOCK(dev);
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clear_bit(index, dev->mpfs.bitmap);
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MPFS_UNLOCK(dev);
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}
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return (err);
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}
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int
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mlx5_mpfs_init(struct mlx5_core_dev *dev)
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{
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spin_lock_init(&dev->mpfs.spinlock);
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bitmap_zero(dev->mpfs.bitmap, MLX5_MPFS_TABLE_MAX);
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return (0);
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}
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void
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mlx5_mpfs_destroy(struct mlx5_core_dev *dev)
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{
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u32 num;
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num = bitmap_weight(dev->mpfs.bitmap, MLX5_MPFS_TABLE_MAX);
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if (num != 0)
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mlx5_core_err(dev, "Leaking %u MPFS MAC table entries\n", num);
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spin_lock_destroy(&dev->mpfs.spinlock);
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}
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